4.6 based:
Big bore stroker (5.3L), 11.0:1 compression, ported FR500 heads, FR500 intake, custom grind cams, TSS oil pump, 7500 rpm...easy 450+whp n/a
5.4 based
Big bore 5.4 block (5.8L) or the new GT500 5.8L aluminum block, 11.0:1 compression, ported Ford GT or Cobra R heads, Cobra R intake, custom grind cams, 7500 rpm, 1-7/8" longtubes, TSS oil pump...550+whp at least n/a
High horsepower n/a modulars seem to run very fast 1/4mi times when compared to boosted cars making the same hp. The idea of high revving high horsepower cammed modulars seems more attractive to me, more of a challenge. I can go and slap the vortech blower I have sitting in the storage and make 400+hp on low boost right now but I rather install my comp cams I have and see if I can hit 360hp n/a on the stock longblock.